A bit tired of the look of strat-style knobs on my Squier J Mascis Jazzmaster, got these for that old school vibe. They certainly look amazing, and are very confortable to turn.
As for cons, and this is me nitpicking, I'd have to say that the plastic is a bit fragile, and if the screwdriver slips when you're installing it can dent the knob (yeah, it happened with me, but it's not a big deal). And, something that's useful to know to whoever's starting out on the offset universe, these fit perfectly on smooth shaft pots, and not on the usual ones that are usually found on strats and the like. Wish I knew that before trying to put them on, because that led me to thinking that I had done something wrong!
All in all, they look good, feel good, but just demand a bit of attention when purchased.